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// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.application;
import com.google.common.base.Strings;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.HostName;
import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
/**
* Represents the DNS routing policy for a load balancer.
*
* @author mortent
*/
public class RoutingPolicy {
private static final String ignoredEndpointPart = "default";
private final ApplicationId owner;
private final String recordId;
private final HostName alias;
private final HostName canonicalName;
public RoutingPolicy(ApplicationId owner, String recordId, HostName alias, HostName canonicalName) {
this.owner = Objects.requireNonNull(owner, "owner must be non-null");
this.recordId = Objects.requireNonNull(recordId, "recordId must be non-null");
this.alias = Objects.requireNonNull(alias, "alias must be non-null");
this.canonicalName = Objects.requireNonNull(canonicalName, "canonicalName must be non-null");
}
/** The application owning this */
public ApplicationId owner() {
return owner;
}
/** The ID of the DNS record identifying this */
public String recordId() {
return recordId;
}
/** This alias (lhs of a CNAME record) */
public HostName alias() {
return alias;
}
/** The canonical name for this (rhs of a CNAME record) */
public HostName canonicalName() {
return canonicalName;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
RoutingPolicy that = (RoutingPolicy) o;
return owner.equals(that.owner) &&
recordId.equals(that.recordId) &&
alias.equals(that.alias) &&
canonicalName.equals(that.canonicalName);
}
@Override
public int hashCode() {
return Objects.hash(owner, recordId, alias, canonicalName);
}
@Override
public String toString() {
return String.format("%s: %s -> %s, owned by %s", recordId, alias, canonicalName, owner.toShortString());
}
public static String createAlias(ClusterSpec.Id clusterId, ApplicationId applicationId, ZoneId zoneId) {
List<String> parts = Arrays.asList(ignorePartIfDefault(clusterId.value()),
ignorePartIfDefault(applicationId.instance().value()),
applicationId.application().value(),
applicationId.tenant().value() +
"." + zoneId.value() + "." + "vespa.oath.cloud"
);
return parts.stream()
.filter(s -> !Strings.isNullOrEmpty((s)))
.collect(Collectors.joining("--"));
}
private static String ignorePartIfDefault(String s) {
return ignoredEndpointPart.equalsIgnoreCase(s) ? "" : s;
}
}
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